michaelm31738 michaelm31738

17-02-2018
Mathematics

contestada

Radon-222 decays at a continuous rate of 17.3% per day. How much will 480 mg of Radon-222 decay to in 8 days?

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sqdancefan sqdancefan

17-02-2018

At the end of each, the amount remaining is (1 -0.173) = 0.827 times the amount at the beginning of the day. After 8 days, the amount remaining is
.. (480 mg)*0.827^8 ≈ 105 mg

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